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Finding the Fourth Proportional to 60,940.48, 84,073.12 and 39,712

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Solution

The fourth proportional to 60,940.48, 84,073.12 and 39,712 is: 54,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,940.48 : 84,073.12 = 39,712 : x
  2. Step 2: Convert to fraction form
    60,940.48/84,073.12 = 39,712/x
  3. Step 3: Cross multiply
    60,940.48x = 84,073.12 × 39,712
  4. Step 4: Simplify right side
    60,940.48x = 3,338,711,741.44
  5. Step 5: Solve for x
    x = 3,338,711,741.44/60,940.48
  6. Step 6: Final answer
    x = 54,786.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.